Are you receiving an invalid product key error in Microsoft Office 2010?If you see this error message after entering your product key, start the Online Solution Wizard.
Run the Online Solution Wizard for a step-by-step solution is available to resolve this problem.
Are you receiving an invalid product key error in an earlier version of Microsoft Office?If you are looking for information on validation errors in an earlier version of Microsoft Office, click to view the following article in the Microsoft Knowledge Base:
2549291 Invalid product key errors in Microsoft Office 2007 or 2003
Learn more about how to find your Office 2010 product key.
Did you lose your Office product key? Are you looking for information about how to replace it?
Learn more about how to replace a lost or damaged Microsoft Office 2010 product key.
Do you have questions about the Office 2010 product key card?
Read frequently asked questions about product key cards.
Here are other resources you can explore if this article cannot resolve your problem: